# Math Help - The number of cycles in the grid N x M

1. ## The number of cycles in the grid N x M

I found in the OEIS solution for 3xN (A059021 - OEIS) and for 2xN (A059020 - OEIS).
How to derive a formula for finding the number of cycles in the grid NxM?

2. Originally Posted by QZAR
How to derive a formula for finding the number of cycles in the grid NxM?
Please define the terms used in that question.